摘要
元素掺杂是一种有效改善电极性能的手段。为了提高钛基锡系形稳阳极的催化活性,La被作为一种改性剂掺杂在Ti/Sb-SnO2电极的涂层中。掺杂改性后电极涂层的形貌通过SEM及XRD进行了检测;并通过EDS检测了涂层中各元素的组成比例;利用电化学阳极极化曲线(LSV)测试了电极的电化学性能。利用掺杂改性后的电极和未改性电极电解处理模拟对硝基苯酚(p-NP)废水,在相同条件下,掺杂La改性后电极处理废水的降解率为92.8%,远高于未改性电极处理废水的降解率(72%)。实验表明,稀土La改性后的Ti/Sb-SnO2电极在处理p-NP废水的优越性相当明显。
The element doping is effective to improve the electrochemical performance of electrode.In order to improve the electrocatalytic performance of Ti/Sb-SnO2 electrode,lanthanum was selected as a promoter to dope in the electrode coating.The micrograph and the structure of the electrode were characterized by SEM and XRD.The element composition of electrode coating was determined by EDS.The electrochemical performance of Ti/Sb-SnO2-La electrode was detected by electrochemical workstation.The doped and undoped electrodes were used to treat simulated p-nitrophenol（p-NP） wastewater.The electrochemical degradation efficiency of the two electrodes for treating p-NP was compared.The results showed that 92.8% p-NP was removed when using Ti/Sb-SnO2-La as electrode,which was much higher than that when using Ti/Sb-SnO2 as electrode.The electrocatalytic performance of the electrode doped with La was superior for the treatment of p-NP wastewater.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2013年第4期465-472,共8页
Journal of the Chinese Society of Rare Earths
基金
国家自然科学基金(51278407)
陕西省自然科学基金重点项目(2012JZ7003)
陕西省科技统筹创新工程课题(2011KTDZ01-05-05)资助
